
INSTRUCTION MANUAL
AIR EJECT
AUTOMATIC AIR LINE DISCONNECT
MODEL #091-28HP
BOOK# 091-28-1
20 PSI MIN.
175 PSI MAX.
1 YEAR WARRANTY
KUSSMAUL ELECTRONICS CO., INC.
170 CHERRY AVE., WEST SAYVILLE, N.Y. 11796
TEL: in NY 631-567-0314 TOLL FREE: 800-346-0857 FAX: 631-567-5826

INTRODUCTION
The Air Eject is a specially designed pneumatic cylinder with an integral solenoid valve
which, when the vehicle is started, disconnects the air line connected to it. The Air
Eject is supplied with the following components:
1. Cylinder Assy
2. Check Valve
3. Gasket
4. Mounting Screws
5. Mating Female Connector
6. Bezel
INSTALLATION
Note: The 1 3/8" diameter hole is critical. If this hole is too
HOLE TEMPLATE
small it will prevent piston from striking Female connector.

INSTALLATION
1. In order to accurately locate the 3 mounting holes first locate the center of the large
hole and mark with a center punch mark. Using a compass scribe 1 3/4" dia. circle. Locate
the bezel over this scribed circle, mark the 3 mounting holes & center punch each hole.
2. Drill 3 mounting holes, 3/16" diameter. Drill 1 center hole using hole saw or conduit
punch. 1 3/8" diameter.
3. Mount the Cylinder Assembly as illustrated.
NOTE LOCATION OF ARROW
ON CHECK VALVE
ARROW MARK IS VERY SMALL
OUPUT TO
VECHICLE'S
AIR SYSTEM
CYLINDER
ASSEMBLY
SCREWS
BEZEL
GASKET
TRUCK WALL
MOUNTING AIR EJECT
4. Install the check valve being certain that the arrow on the check valve points away from
the cylinder assembly.
5. Connect tubing as required to vehicle’s air system.

WIRING
1. Wire the solenoid valve to the vehicle’s starting circuit. Be certain that the solenoid is
energized only while the vehicle is cranking and deenergized at all other times.
TO STARTER
SWITCH
BATTERY
+
STARTER
_
STARTER
SOLENOID
TO CHASSIS
GROUND
TO CHASSIS
GROUND
WIRING AIR EJECT
AIR
EJECT
MAINTENANCE
The Air Eject is a precision device designed and manufactured for many years of reliable
service. Periodic servicing, cleaning and lubricating are important.
It is suggested that the cylinder assembly be inspected regularly and cleaned and lubricated
at a minimum once every six months.
In applications where contamination by water and road dirt are excessive, more frequent
servicing may be required.
Lubrication should be only with non-petroleum based lubricants such as Dow Corning DC4 Silicone grease, Silicone or Teflon spray.

INSTALLATION RECORD & WARRANTY
Date Installed
Installed By
Vehicle Identification
Vehicle Owner
WARRANTY
All products of Kussmaul Electronics Company Inc. are warranted to be
free of defects of material or workmanship. Liability is limited to repairing or
replacing at our factory, without charge, any material or defects which
become apparent in normal use within 1 year from the date the equipment
was shipped. Equipment is to be returned, shipping charges prepaid and will
be returned, after repair, shipping charges paid.
Kussmaul Electronics Company, Inc. shall have no liability for damages
of any kind to associated equipment arising from the installation and /or use
of the Kussmaul Electronics Company, Inc. products. The purchaser, by the
acceptance of the equipment, assumes all liability for any damages which
may result from its installation, use or misuse, by the purchaser, his or its
employees or others.
ALSO AVAILABLE
NEW
MODEL 091-28-AK
WEATHERPROOF ADAPTER KIT
The Weatherproof Adapter Kit provides a recessed mounting for the Air Eject and a gasketed cover which automatically closes when the air line is ejected . A rugged
polypropylene sleeve covering the female coupler permits easy manual removal of the air line and protects the
coupler from damage during automatic release.
NEW COVER
The weatherproof adapter kit
comes with a new cover that has
an Air Eject label inserted on the
front